Van Ness Pets Odor Reducing Zeolite Cat Litter Box Air Filter

Fits perfectly into the sleeve on top of all sizes of Van Ness litter boxes. Along with regular daily litter box maintenance, using a good quality litter and litter deodorizer it will assist in keeping odors at a minimum. I change filters every couple of months.

I use this in my cat litter box. It goes on top, and only works with certain litter boxes. Purchased previously a litter box that included 2 filters with it. I purchased this product to replace them. Works perfectly, for one side only. These particular litter boxes are designed to hold in place 2 filters. I thought 2 filters were in one bag, but no. I will have to purchase another one to get full great smelling coverage.